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  1. Good evening, My name is Cal and I am new to The Fossil Forum. I have been collecting fossil and mineral specimens since I was a kid. I'm from California, but make my way across a lot of the west to collect in the field. By no means am I an expert, and most of my learning has been done via books, the internet, and talking to others who are far more knowledgeable. I am looking forward to learning from everyone and seeing your collections! -Cal
  2. Hello to all. I would appreciate some help identifying if this is a fossil and what it may be. I found it in a canyon in San Diego and plan on taking it to our local natural history museum if it turns out that is something worth taking. Thank you in advance for your help.
  3. sonarcop

    Dino Egg or Concretion?

    I have received conflicting responses from numerous geologists on my find. Even had one geologist remark that my find was a fake, which I can assure is not. Found in dry riverbed off mountain road in Portola Valley, California. Any advice or suggestions on identification is truly appreciated.
  4. Hi all, a family member found this 30 years ago near Anza Borrego in southern CA. Looks a lot like juvenile tortoises I've seen in the area. I'm aware that fossil testudines are known from the area, but 1) is this one?, and 2), is a family, genus or species level identification possible from this partial specimen? Thanks. (The ruler is in inches. The specimen itself is about 9cm x 7cm.)
  5. hsug1747

    Fish from Santa Barbara

    Hi everyone, this is a fish I found a few years ago in Santa Barbara. If anyone could help with ID, or provide any resources on fossils in the area it would be greatly appreciated. The fossil is in very soft shale, measures just over 3 inches head to tail, had lots of bivalve and gastropod fossils nearby. I can provide additional pics/info if necessary. Thanks!
  6. Went out on my first time hunting fossil fish and found this! Any tips for identifying fishes? I’m new to this and any help is appreciated!
  7. Found this on the beach near Half Moon Bay, California. Looks maybe like it is the socket part of a ball and socket joint?
  8. Desrosiers1718

    Fossil found on California beach

    Found this on a rocky beach here in Southern California, wondering if it is fish bone or a scale, or plant material?
  9. Hello! This is my first post. I'm happy to meet you all! I currently have a very modest fossil collection, but have been keeping my eyes peeled for some specimens that I was really excited about. I came across this fossil, which I was considering adding to my collection. It is described as a 200g fossil of a 60mm Anomalocaris appendage next to a small brachiopod. It was found in the Latham Shale in the Marble Mountains of California, and it's indicated that finding these is a very uncommon occurrence. I was wondering if anyone here might have insight as to if it's real, fake, or restored in any way. Thanks!
  10. MelanieD

    What in the world?

    What the heck? Is this anything other than a weird formation/layering of various substances? It’s large, probably 8-10 inches from broad end to narrow tip and 3-4 inches thick. photo 1: from the “top side” photo 2: the side of the narrow end photo 3: the tip on the narrow end
  11. svcgoat

    Brachiopod or Bivalve?

    Is this a Bivalve or brachiopod? Seller lists it as both. Found near Somis California, no other information given
  12. soupkid

    fossil, or fishy coincidence?

    looks like a fish? but maybe i just got lucky? don't know how to differentiate, but even if it is a fish rock and not a fish fossil, ill still be happy with it! found on the beach in San Pedro CA.
  13. I went out to the Marble Mountains with my brother recently and checked out the area to find trilobites. I’m a novice and this was my first fossil hunting trip, however, I couldn’t really get to the site due to nearby roads being closed off. Before I go back and hike to the site, what are some advice you guys can give for fossil hunting in general? More specific advice for a site like the Marble Mountains would be greatly appreciated! I recently bought tools and hope to get more into paleontology! Thanks
  14. Vopros

    What is this bone?

    I found this bone on a beach in California. My questions are: 1. What is this bone and how old it is. 2. is the break that is fielded up with sedimentary rock was present in the original bone? If so, is it the way the bone is or it is a result of an injury? 3. Are the lines on the bone bite marks? it is around 6 by 6 cm. Thanks!
  15. svcgoat

    Topanga Ammonite?

    Seller says this Ammonite has a label saying it's from Topanga Canyon California. However the Topanga formation is Miocene and I am unsure if there are Mesozoic formations nearby. Seller couldn't give me a formation as it's from an old collection.
  16. Byndpltcs

    Interesting Rocks

    Hello everyone. Fairly new… just found these. Riverside County. Just trying to figure out what they are. They looked pretty interesting. Would anyone know what they are?
  17. Tidgy's Dad

    Adam's Cambrian

    A rangeomorph holdfast trace fossil from the Ediacara formation, Rawnsley quartzite of the Flinders Range, South Australia. This specimen is Medusina mawsoni, so called because it was until recently thought to be a jellyfish, but is now believed to be the attachment point of a fractal rangeomorph as Charniodiscus is the point of anchorage for Charnia sp. This one may have been the holdfast point for some species of Rangea. The diameter of the outer circle is 1.5 cm and the fossil is estimated to be 555 million years old.
  18. LexonTheDragon

    Fossil Imprint or not? If so what is it

    Lake Amador, California (If you need clearer photos just lmk)
  19. Caroline Clausen

    Donated Fossils - Need Help IDing

    I work at a college in Southern California. We've had a lot of donations recently to our science department and some of those donations include fossils. I was able to identify some of them, but there are a few that I am having some trouble with. Some of the other fossils that we received are: Sand dollars, clams, oysters, worm hole casts, a sea cow tooth, a shark tooth, crinoids, brachiopods, scallops, gastropods, and bryozoans. Very few of these fossils included where they were found. The two labels we received said that the sea cow/shark tooth were found in California, as well as some of the sand dollars. Aside from that, I do not know where the fossils were found or what rock layers they were found in. Below are pictures and descriptions of the seven fossils. The above pictures I believe are teeth. In the research that I have done, I think they might be crocodile or alligator teeth. The one on the left is slightly curved, but the one on the right is more straight. Both have four "layers"; a thin outer layer, a second (also thin) layer, a thicker third layer, and then a fourth layer that fills the middle. The surface is bumpy rather than smooth, which is unexpected in regards to teeth. The base (~1cm) is wider than the top (L: ~.5cm, R: ~1cm). Both are about ~2.5cm from base to top. The fossil on the left has a broken tip so it might be longer and more curved than it appears and the base is also broken on a diagonal. I have no real idea what to make of this fossil, but I am thinking that it might be a plant fossil. The top is ~1.5cm in width and the bottom is ~2mm in width. From top to bottom, the fossil is ~3cm. There is a ridge on both of the horizontal "limbs" as well as a half cm ridge starting at the slight dip at the top. What is visible of this fossil appears to be circular and ringed with smaller, inner rings and outer, larger rings. The diameter is ~1.5cm. A few of the other fossils that were donated were crinoids, so I was thinking this might be in the same realm as that, but it is so much larger than all of the crinoids that we were given. I am thinking that these might be clams because we were given an abundance of clams, but I am not certain. The one on the right has small, white crystals (possibly quartz) on the bottom of it. I tried to get a picture of the crystals, but they were far too small. I understand that this is super vague and might not be a lot to go on, but any help would be appreciated!
  20. Bobby Rico

    Bakersfield shark tooth IDs

    Hi all Please and thank, help needed,!i struggling to sort out my shark teeth collection. Can any ID this Bakersfield teeth that Doren gave to me. 1.2.3
  21. Fossilizable

    Just dendrites of a weird sort?

    These discolorations, perfectly flush with the rock surface, are in sandstone from the Matilija or Coldstone formation, I think. Some of the pattern suggests dendrites maybe, but perhaps it's organic in origin? About 8 cm long, 3 wide. Ventura County, CA. Thanks!
  22. How Early Humans May Have Transformed L.A.’s Landscape Forever Science Friday, NPR, August 25, 2023 Uncovering Death by Fire 13,000 years ago Micheal Price, Sciences News, August 17, 2023 La Brea Tar Pits Reveal Clues to Mysterious Mass Extinction By Shana Hutchins, Futurity, August 18, 2023 The paywalled paper is: O’Keefe, F.R., Dunn, R.E., Weitzel, E.M., Waters, M.R., Martinez, L.N., Binder, W.J., Southon, J.R., Cohen, J.E., Meachen, J.A., DeSantis, L.R. and Kirby, M.E., 2023. Pre–Younger Dryas megafaunal extirpation at Rancho La Brea linked to fire-driven state shift. Science, 381(6659), p.eabo3594. Yours, Paul H.
  23. gingeraz

    Is this indeed a shark's tooth

    I've been a lurker for a while. First time I've gotten the courage to post. Did I indeed find a shark's tooth, or are my teenagers right to patronize me? This was found on a beach in San Pedro, California.
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